Over one-fourth of Googlers use internal, datacenter-hosted virtual desktops. This on-premises offering sits in the corporate network and allows users to develop code, access internal resources, and use GUI tools remotely from anywhere in the world. Among its most notable features, a virtual desktop instance can be sized according to the task at hand, has persistent user storage, and can be moved between corporate datacenters to follow traveling Googlers.

Until recently, our virtual desktops were hosted on commercially available hardware on Google's corporate network using a homegrown open source virtual cluster-management system called Ganeti (http://www.ganeti.org/). Today, this substantial and Google-critical workload runs on Google Cloud Platform (GCP). This article discusses the reasons for the move to GCP, and how the migration was accomplished.

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